Air-heating attachment for stoves.



No. 731,224. I PATENTED JUNE 16, 1903. D. H. RIGKERD'.

AIR HEATING ATTACHMENT FOR STOVES.

APPLICATION rum) NOV. 17, 1902.

2 muuus I I I I a In INVENTOR" UNITED STATES -Patented June 16, 1903.

PATENT OFFICE.

AIR-HEATING ATTACHMENT FOR STOVES.

SPECIFICATION forming part of Letters Patent No. 731,224, dated June 16 1903. Application filed November 1'7, 1902. Serial No. 131,647. (No model.)

accompanying drawings, which form part ofthis specification.

This invention is an improvement in airheating attachments for stoves and furnaces; and its object is to provide a simple device whereby part of the heat of the waste products of combustion escaping through stovepipes may be recovered and utilized to heat air, which may be admitted directly into the room containing the pipe or conducted to another room or apartment to warm the same.

The invention may also be utilized either as an air heating and circulating apparatus within the room containing the stovepipe in which the heateris located or to heat air drawn from the exterior and admitted from the' through the air-heating section of the pipe and Fig. 3 is a transverse section on line 3 3, Fig. 2.

In said drawings, A designates an air-heating section of stovepipe which may be connected in the usual manner with other pipesections a, arranged to conduct the waste products of combustion from a stove or furnace to a flue or uptake. The section A is preferably cylindrical in form and has a free passage-way for the products of combustion, and its ends may be made so as to telescope in the usual manner with the adjacent pipesections a, as shown in the drawings. In one side of section A, however, is a large pocket B, which projects into the pipe and is separated from the interior thereof by a thin metallic wall I), and said pocket projects outside the pipe, forming an exterior enlargement or protuberance B thereon, which is closed at its ends by heads 12, which are provided with collars 19 b which are adapted to telescope with the ends of air-pipes O and D, the lower pipe 0 extending down to near the floor of theroom or may be led to any point of the room desired, while the upper pipe D extends upward and may extend to any point in the room where it is desired to conduct and discharge the heated air.

In Fig. 1 pipe 0 terminates near the floor directly beneath the heater, and pipe D terminates above the heater near the ceiling. This arrangement will produce aquick and rapid circulation of air in the room and rapidly heat the cold air therein.

If desired, the upper pipe D may be extended, as indicated by dotted lines D in Fig. 1, into an overhead room, and thus supply heated air thereto. Also the lower pipe 0 may extend out to the atmosphere through the wall of the house, as indicated by dotted lines 0' in Fig. 1, thus introducing fresh air to the heater.

It will be noted that the apparatus may be readily used as described either for heating and circulating air within the room or for introducing and heating fresh. air, and either use is within my invention. Also, if desired, two or more air-heating sections'A could be arranged in one pipe, as is obvious and as indicated by dotted lines A in'Fig. 1, and

such sections may be used tandem or independently.

The device is very simple, but efiective. It does not require any expensive construction of pipe. It does not interfere with the proper draft of the stove, and it does not have any open joints through which soot, smoke, ea, might escape into the air-pipes or room, and it can be conveniently located at any desired points in the length of the smoke-pipe.

Having thus described my invention, what I therefore claim as new, and desire to secure by Letters Patent thereon, is-

1. A smoke-pipe air-heater, comprising a section of stovepipe provided with an inwardly-extending pocket in its side, and an exterior enlargement opposite the pocket forming therewith an air-heating chamber, and apertures in the ends of the enlargement exterior to the pipe for the connection of airpipes, substantially as described.

2. The herein-described smoke-pipe airheater, comprising a section of smoke-pipe having an interior pocket and an exterior eniargement forming with the pocket an airheating chamber; with air-inlet and air-outlet i0 pipesdetachably connected to the opposite ends of said enlargement exterior to the pipe section, substantially as and for the purpose specified.

In testimony that I claim the foregoing as my own I aflix my signature in presence of 15 two witnesses.

DANIEL H. RICKERD. In presence of EDNA WALLACE, N. ROSENBERGER. 

